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authorJohann Glaser <Johann.Glaser@gmx.at>2013-04-05 15:34:40 +0200
committerJohann Glaser <Johann.Glaser@gmx.at>2013-04-05 15:34:40 +0200
commit7ef245aa7d15195b3f4200d2d3cb2796bc695b88 (patch)
treec660d5517f5d6433fd67def375cfea55191c9362 /passes/fsm/fsm_export.cc
parent9714072b28b41b1ef4205247c294f855f4b396e8 (diff)
fsm_export: optionally use binary state encoding as state names instead of
s0, s1, ...
Diffstat (limited to 'passes/fsm/fsm_export.cc')
-rw-r--r--passes/fsm/fsm_export.cc29
1 files changed, 23 insertions, 6 deletions
diff --git a/passes/fsm/fsm_export.cc b/passes/fsm/fsm_export.cc
index 2093857b..dc9ec2b0 100644
--- a/passes/fsm/fsm_export.cc
+++ b/passes/fsm/fsm_export.cc
@@ -49,7 +49,7 @@ std::string kiss_convert_signal(const RTLIL::SigSpec &sig) {
* @param module pointer to module which contains the FSM cell.
* @param cell pointer to the FSM cell which should be exported.
*/
-void write_kiss2(struct RTLIL::Module *module, struct RTLIL::Cell *cell, std::string filename) {
+void write_kiss2(struct RTLIL::Module *module, struct RTLIL::Cell *cell, std::string filename, bool origenc) {
std::map<RTLIL::IdString, RTLIL::Const>::iterator attr_it;
FsmData fsm_data;
FsmData::transition_t tr;
@@ -86,15 +86,24 @@ void write_kiss2(struct RTLIL::Module *module, struct RTLIL::Cell *cell, std::st
kiss_file << ".o " << std::dec << fsm_data.num_outputs << std::endl;
kiss_file << ".p " << std::dec << fsm_data.transition_table.size() << std::endl;
kiss_file << ".s " << std::dec << fsm_data.state_table.size() << std::endl;
- kiss_file << ".r s" << std::dec << fsm_data.reset_state << std::endl;
+ if (origenc) {
+ kiss_file << ".r " << kiss_convert_signal(fsm_data.state_table[fsm_data.reset_state]) << std::endl;
+ } else {
+ kiss_file << ".r s" << std::dec << fsm_data.reset_state << std::endl;
+ }
for (i = 0; i < fsm_data.transition_table.size(); i++) {
tr = fsm_data.transition_table[i];
try {
kiss_file << kiss_convert_signal(tr.ctrl_in) << ' ';
- kiss_file << 's' << tr.state_in << ' ';
- kiss_file << 's' << tr.state_out << ' ';
+ if (origenc) {
+ kiss_file << kiss_convert_signal(fsm_data.state_table[tr.state_in]) << ' ';
+ kiss_file << kiss_convert_signal(fsm_data.state_table[tr.state_out]) << ' ';
+ } else {
+ kiss_file << 's' << tr.state_in << ' ';
+ kiss_file << 's' << tr.state_out << ' ';
+ }
kiss_file << kiss_convert_signal(tr.ctrl_out) << std::endl;
}
catch (int) {
@@ -116,7 +125,7 @@ struct FsmExportPass : public Pass {
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
- log(" fsm_export [-noauto] [-o filename] [selection]\n");
+ log(" fsm_export [-noauto] [-o filename] [-origenc] [selection]\n");
log("\n");
log("This pass creates a KISS2 file for every selected FSM. For FSMs with the\n");
log("'fsm_export' attribute set, the attribute value is used as filename, otherwise\n");
@@ -131,6 +140,9 @@ struct FsmExportPass : public Pass {
log(" -o filename\n");
log(" filename of the first exported FSM\n");
log("\n");
+ log(" -origenc\n");
+ log(" use binary state encoding as state names instead of s0, s1, ...\n");
+ log("\n");
}
virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
{
@@ -138,6 +150,7 @@ struct FsmExportPass : public Pass {
std::string arg;
bool flag_noauto = false;
std::string filename;
+ bool flag_origenc = false;
size_t argidx;
log_header("Executing FSM_EXPORT pass (exporting FSMs in KISS2 file format).\n");
@@ -153,6 +166,10 @@ struct FsmExportPass : public Pass {
filename = args[argidx];
continue;
}
+ if (arg == "-origenc") {
+ flag_origenc = true;
+ continue;
+ }
break;
}
extra_args(args, argidx, design);
@@ -163,7 +180,7 @@ struct FsmExportPass : public Pass {
if (cell_it.second->type == "$fsm" && design->selected(mod_it.second, cell_it.second)) {
attr_it = cell_it.second->attributes.find("\\fsm_export");
if (!flag_noauto || (attr_it != cell_it.second->attributes.end())) {
- write_kiss2(mod_it.second, cell_it.second, filename);
+ write_kiss2(mod_it.second, cell_it.second, filename, flag_origenc);
filename.clear();
}
}